Adjustable wrench for milling-machines



J. PAYUCHECK. ADJUSTABLE WRENCH FOR MILLING MACHINES.

APPLICATION FILED AUG-7| 1920- PatentedSe t. 27, 1921. 1,392,025. 1.

am vd/wtoc j -(1 A j a ac/leek $51 @btomwq I 1. PAYUCHECK.

ADJUSTABLE WRENCH FOR MILLING MACHINES.

APPLICATION FILED AUGJT, I920.

PatentedSept. 27, 1921 3 SHEETS-SHEET 2.

l. P AYUCHECK.

ADJUSTABLE WRENCH FOR MILLING MACHINES. APPLICATION FILED Auehn, 1920.

1 ,392 ,025, PatantedSept. 27, 1921.

a sums-sum 3.

Snow oz --LZ(.015 Evade @3311 when PATENT OFFICE.

JACOB IPAYUCHECK, or CHESTER, rmvNsYLvANIA. I

ADJUSTABLE Wanner-r r03 MILLING-MACHINES.

specification of Letters Patent. Patented Sept. 27, 1921.

Application filed August 17, 1920. Serial No. 404,073.

To all whom it may concern:

Be 1t known that I, JACOB PAYUOHECK, a

citizen of Russia, residing at Chester, county of Delaware, and State ofPennsylvania, have invented certain new and useful Improvements inAdjustable Wrenches for Milling-Machines, of 'which the following is aspecification. i V

The present invention relates to a tool, particularly a wrench to beused in milling machines for removing the rotary knife or cutter head asa whole for. the purpose of sharpening, the knives or exchanging thecutter head.

It is a well known fact that in the art of milling that the removal oftherotary cutter head after its knives or blades once became dull couldonly be done by the destruction of the entire head by a chisel, hammeror the like. a 7

It is the object of the invention to provide a tool by the. use of whichthe cutterhead of a milling machine can be removed from its cone-shaft,as a whole, without destroying any part of it and thus savingconsiderably on material, labor and expenses, and avoiding anyconsiderable interruption in the operation of the machine.

The invention may be further briefly summarized as consisting in theconstruction and combination of parts hereinafter set forth in thefollowing description, drawings and claims.

Referring to the drawings Figure 1 is a front view of the toolconstructed according to the present invention looking toward the faceof a milling machine.

Fig. 2 is a top plan view thereof.

Fig. 3 is an end view of the tool, parts being broken away to show theinterior arrangement.

Fig. 4 is a sectional view, the section being taken on line Jr-41 ofFig. 1.

Fig. 5 is a view similar to Fig. '1 with the cutter head in position tobe operated upon by the tool according to the present invention.

Fig. 6 is a perspective detail view of one of the lugs used for bindingthe cutter head during the operation thereon of the tool.

In carrying out my invention, any preferred form and construction ofparts may be employed, so long as they possess the necessary features,but I have shown one form in the drawings which meets the require- 11 isextended considerably ments with great efiiciency; and in suchembodiment, 10 represents one, and 11 the second jaw of the tool adaptedfor cooperation, and held together over the knives or blades of acutter-head by clamping screws 12 and 13 working in sockets 14 and 15respectively pivotally secured to the lower jaw 10 by means of screwbolts 16 or the like. In or der'to allow an adjustment of the tool with-1n certain limits to the various sizes of cutter heads the sockets 14and 15 are provided with longitudinal front slots 17 in which screwbolts 18 screwed into the material of the upper jaw 10 are adjustableand can be locked in their adjusted positions by means of the lock nuts19 and washers 20. The lower as well as the upper jaw has its inner edgeformed on substantially the are of a circle and provided with ofi'setshoulders 21 at substantially anangle of 70 to' the jaws l0 and 11correspondingto theangle of the knives 22 of a rotary cutter head 23screwed upon the end of a cone-shaft 24 of a milling machine. The outerend of the upper jaw beyond the socket 14, as indicated at 25 in orderto constitute a lever by means of which the tool is operated.

As shown in Fig. 5, lugs of a form illustrated at 26 in detail in F ig.6 are used to bind the cutter head and jaws as indicated at 27 in Fig.5. The inner face of the shoulder and the inner face of the knife willform a straight surface for the reception and accommodation of thebinding lugs.

In operation, the jaws of the tool are placed over the cutter head of amilling machine and after introduction of the lugs 26 between two of aplurality of knives in several places, the jaws. are clamped down uponknives and lugs in the well known manner. When now the shaft is startedto rotate in a direction opposite to its rotation when operating thecutter head, and the extended lever 25 is chained down in any convenientmanner, it will be clear that the cutter head will be removed from thecone shaft as a whole so that it can be exchanged for a new one whilethe blades or the knives of the removed cutter head may be sharpened. Itis clear that in this manner no noticeable interruption in the workingof the machine will be necessary and that a considerable saving inlabor, time and material is achieved.

Having thus described my invention,

what I claim, and desire to secure by Letters Patent of the UnitedStates is- 1. A tool 01": the character described comprising twoclamp-jaws having their inner edges formed on the arc of a circle,shoulders on said inner edges, means for adjustably clamping said jawsover a rotary cutter head, and means cooperating with said shoulders forbinding said cutter head and tool upon the reverse motion of the coneshaft for said cutter.

2. A tool of the character described comprising two clamp jaws havingtheir inner oppositely disposed edges formed substantially on the arc ofa circle, shoulders at the inner edges of said jaws, the outer ends ofboth jaws extended, sockets surrounding said extended outer ends, meansfor securing said sockets to the lower j aw, means for allowing alimited adjustment of the upper jaw with respect to the lower one, anoperating lever on'the upper jaw, and lugs engaging said shouldersadapted to be inserted between two of a plurality of pairs of knives ofa rotary cutter head clamped between both jaws for binding jaws andknives upon therotation of the shaft opposite to its working rotation.

3. 1). tool of the character described comprising two clamp-jaws,sockets for connecting both jaws pivotally secured to extensions of thelower jaw and secured to the upper jaw, allowing an adjustment of thetwo jaws within certain limits, clamping screws entering said socketsfrom the top for locking both jaws in their adjusted relative positions,a lever extension on the upper jaw adapted to be chained down after thejaws have been clamped over the knives of a rotary cutter head, andmeans for binding said knives and cutter head upon the reverse rotationof the cutter head shaft.

4. A tool of thecharacter described comprising two clamp-jaws eachhaving a central part with its inner edge curved substantially on thearc of a circle for engagement with the knives or blades of a cutterhead on the cone shaft of a milling machine, shoulders on the inneredges of both jaws substantially at an angle of 70 to said jawscorresponding to the arc of the cutters, lugsv signature.

JACOB PAYUCHECK.

